File: //home/retile.ru/public_html/catalog/view/theme/unishop2/js/workbox/workbox-strategies.dev.js
this.workbox = this.workbox || {};
this.workbox.strategies = (function (exports, assert_js, logger_js, WorkboxError_js, cacheNames_js, getFriendlyURL_js, cacheMatchIgnoreParams_js, Deferred_js, executeQuotaErrorCallbacks_js, timeout_js) {
'use strict';
try {
self['workbox:strategies:6.5.0'] && _();
} catch (e) {}
/*
Copyright 2020 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
function toRequest(input) {
return typeof input === 'string' ? new Request(input) : input;
}
/**
* A class created every time a Strategy instance instance calls
* {@link workbox-strategies.Strategy~handle} or
* {@link workbox-strategies.Strategy~handleAll} that wraps all fetch and
* cache actions around plugin callbacks and keeps track of when the strategy
* is "done" (i.e. all added `event.waitUntil()` promises have resolved).
*
* @memberof workbox-strategies
*/
class StrategyHandler {
/**
* Creates a new instance associated with the passed strategy and event
* that's handling the request.
*
* The constructor also initializes the state that will be passed to each of
* the plugins handling this request.
*
* @param {workbox-strategies.Strategy} strategy
* @param {Object} options
* @param {Request|string} options.request A request to run this strategy for.
* @param {ExtendableEvent} options.event The event associated with the
* request.
* @param {URL} [options.url]
* @param {*} [options.params] The return value from the
* {@link workbox-routing~matchCallback} (if applicable).
*/
constructor(strategy, options) {
this._cacheKeys = {};
/**
* The request the strategy is performing (passed to the strategy's
* `handle()` or `handleAll()` method).
* @name request
* @instance
* @type {Request}
* @memberof workbox-strategies.StrategyHandler
*/
/**
* The event associated with this request.
* @name event
* @instance
* @type {ExtendableEvent}
* @memberof workbox-strategies.StrategyHandler
*/
/**
* A `URL` instance of `request.url` (if passed to the strategy's
* `handle()` or `handleAll()` method).
* Note: the `url` param will be present if the strategy was invoked
* from a workbox `Route` object.
* @name url
* @instance
* @type {URL|undefined}
* @memberof workbox-strategies.StrategyHandler
*/
/**
* A `param` value (if passed to the strategy's
* `handle()` or `handleAll()` method).
* Note: the `param` param will be present if the strategy was invoked
* from a workbox `Route` object and the
* {@link workbox-routing~matchCallback} returned
* a truthy value (it will be that value).
* @name params
* @instance
* @type {*|undefined}
* @memberof workbox-strategies.StrategyHandler
*/
{
assert_js.assert.isInstance(options.event, ExtendableEvent, {
moduleName: 'workbox-strategies',
className: 'StrategyHandler',
funcName: 'constructor',
paramName: 'options.event'
});
}
Object.assign(this, options);
this.event = options.event;
this._strategy = strategy;
this._handlerDeferred = new Deferred_js.Deferred();
this._extendLifetimePromises = []; // Copy the plugins list (since it's mutable on the strategy),
// so any mutations don't affect this handler instance.
this._plugins = [...strategy.plugins];
this._pluginStateMap = new Map();
for (const plugin of this._plugins) {
this._pluginStateMap.set(plugin, {});
}
this.event.waitUntil(this._handlerDeferred.promise);
}
/**
* Fetches a given request (and invokes any applicable plugin callback
* methods) using the `fetchOptions` (for non-navigation requests) and
* `plugins` defined on the `Strategy` object.
*
* The following plugin lifecycle methods are invoked when using this method:
* - `requestWillFetch()`
* - `fetchDidSucceed()`
* - `fetchDidFail()`
*
* @param {Request|string} input The URL or request to fetch.
* @return {Promise<Response>}
*/
async fetch(input) {
const {
event
} = this;
let request = toRequest(input);
if (request.mode === 'navigate' && event instanceof FetchEvent && event.preloadResponse) {
const possiblePreloadResponse = await event.preloadResponse;
if (possiblePreloadResponse) {
{
logger_js.logger.log(`Using a preloaded navigation response for ` + `'${getFriendlyURL_js.getFriendlyURL(request.url)}'`);
}
return possiblePreloadResponse;
}
} // If there is a fetchDidFail plugin, we need to save a clone of the
// original request before it's either modified by a requestWillFetch
// plugin or before the original request's body is consumed via fetch().
const originalRequest = this.hasCallback('fetchDidFail') ? request.clone() : null;
try {
for (const cb of this.iterateCallbacks('requestWillFetch')) {
request = await cb({
request: request.clone(),
event
});
}
} catch (err) {
if (err instanceof Error) {
throw new WorkboxError_js.WorkboxError('plugin-error-request-will-fetch', {
thrownErrorMessage: err.message
});
}
} // The request can be altered by plugins with `requestWillFetch` making
// the original request (most likely from a `fetch` event) different
// from the Request we make. Pass both to `fetchDidFail` to aid debugging.
const pluginFilteredRequest = request.clone();
try {
let fetchResponse; // See https://github.com/GoogleChrome/workbox/issues/1796
fetchResponse = await fetch(request, request.mode === 'navigate' ? undefined : this._strategy.fetchOptions);
if ("dev" !== 'production') {
logger_js.logger.debug(`Network request for ` + `'${getFriendlyURL_js.getFriendlyURL(request.url)}' returned a response with ` + `status '${fetchResponse.status}'.`);
}
for (const callback of this.iterateCallbacks('fetchDidSucceed')) {
fetchResponse = await callback({
event,
request: pluginFilteredRequest,
response: fetchResponse
});
}
return fetchResponse;
} catch (error) {
{
logger_js.logger.log(`Network request for ` + `'${getFriendlyURL_js.getFriendlyURL(request.url)}' threw an error.`, error);
} // `originalRequest` will only exist if a `fetchDidFail` callback
// is being used (see above).
if (originalRequest) {
await this.runCallbacks('fetchDidFail', {
error: error,
event,
originalRequest: originalRequest.clone(),
request: pluginFilteredRequest.clone()
});
}
throw error;
}
}
/**
* Calls `this.fetch()` and (in the background) runs `this.cachePut()` on
* the response generated by `this.fetch()`.
*
* The call to `this.cachePut()` automatically invokes `this.waitUntil()`,
* so you do not have to manually call `waitUntil()` on the event.
*
* @param {Request|string} input The request or URL to fetch and cache.
* @return {Promise<Response>}
*/
async fetchAndCachePut(input) {
const response = await this.fetch(input);
const responseClone = response.clone();
void this.waitUntil(this.cachePut(input, responseClone));
return response;
}
/**
* Matches a request from the cache (and invokes any applicable plugin
* callback methods) using the `cacheName`, `matchOptions`, and `plugins`
* defined on the strategy object.
*
* The following plugin lifecycle methods are invoked when using this method:
* - cacheKeyWillByUsed()
* - cachedResponseWillByUsed()
*
* @param {Request|string} key The Request or URL to use as the cache key.
* @return {Promise<Response|undefined>} A matching response, if found.
*/
async cacheMatch(key) {
const request = toRequest(key);
let cachedResponse;
const {
cacheName,
matchOptions
} = this._strategy;
const effectiveRequest = await this.getCacheKey(request, 'read');
const multiMatchOptions = Object.assign(Object.assign({}, matchOptions), {
cacheName
});
cachedResponse = await caches.match(effectiveRequest, multiMatchOptions);
{
if (cachedResponse) {
logger_js.logger.debug(`Found a cached response in '${cacheName}'.`);
} else {
logger_js.logger.debug(`No cached response found in '${cacheName}'.`);
}
}
for (const callback of this.iterateCallbacks('cachedResponseWillBeUsed')) {
cachedResponse = (await callback({
cacheName,
matchOptions,
cachedResponse,
request: effectiveRequest,
event: this.event
})) || undefined;
}
return cachedResponse;
}
/**
* Puts a request/response pair in the cache (and invokes any applicable
* plugin callback methods) using the `cacheName` and `plugins` defined on
* the strategy object.
*
* The following plugin lifecycle methods are invoked when using this method:
* - cacheKeyWillByUsed()
* - cacheWillUpdate()
* - cacheDidUpdate()
*
* @param {Request|string} key The request or URL to use as the cache key.
* @param {Response} response The response to cache.
* @return {Promise<boolean>} `false` if a cacheWillUpdate caused the response
* not be cached, and `true` otherwise.
*/
async cachePut(key, response) {
const request = toRequest(key); // Run in the next task to avoid blocking other cache reads.
// https://github.com/w3c/ServiceWorker/issues/1397
await timeout_js.timeout(0);
const effectiveRequest = await this.getCacheKey(request, 'write');
{
if (effectiveRequest.method && effectiveRequest.method !== 'GET') {
throw new WorkboxError_js.WorkboxError('attempt-to-cache-non-get-request', {
url: getFriendlyURL_js.getFriendlyURL(effectiveRequest.url),
method: effectiveRequest.method
});
} // See https://github.com/GoogleChrome/workbox/issues/2818
const vary = response.headers.get('Vary');
if (vary) {
logger_js.logger.debug(`The response for ${getFriendlyURL_js.getFriendlyURL(effectiveRequest.url)} ` + `has a 'Vary: ${vary}' header. ` + `Consider setting the {ignoreVary: true} option on your strategy ` + `to ensure cache matching and deletion works as expected.`);
}
}
if (!response) {
{
logger_js.logger.error(`Cannot cache non-existent response for ` + `'${getFriendlyURL_js.getFriendlyURL(effectiveRequest.url)}'.`);
}
throw new WorkboxError_js.WorkboxError('cache-put-with-no-response', {
url: getFriendlyURL_js.getFriendlyURL(effectiveRequest.url)
});
}
const responseToCache = await this._ensureResponseSafeToCache(response);
if (!responseToCache) {
{
logger_js.logger.debug(`Response '${getFriendlyURL_js.getFriendlyURL(effectiveRequest.url)}' ` + `will not be cached.`, responseToCache);
}
return false;
}
const {
cacheName,
matchOptions
} = this._strategy;
const cache = await self.caches.open(cacheName);
const hasCacheUpdateCallback = this.hasCallback('cacheDidUpdate');
const oldResponse = hasCacheUpdateCallback ? await cacheMatchIgnoreParams_js.cacheMatchIgnoreParams( // TODO(philipwalton): the `__WB_REVISION__` param is a precaching
// feature. Consider into ways to only add this behavior if using
// precaching.
cache, effectiveRequest.clone(), ['__WB_REVISION__'], matchOptions) : null;
{
logger_js.logger.debug(`Updating the '${cacheName}' cache with a new Response ` + `for ${getFriendlyURL_js.getFriendlyURL(effectiveRequest.url)}.`);
}
try {
await cache.put(effectiveRequest, hasCacheUpdateCallback ? responseToCache.clone() : responseToCache);
} catch (error) {
if (error instanceof Error) {
// See https://developer.mozilla.org/en-US/docs/Web/API/DOMException#exception-QuotaExceededError
if (error.name === 'QuotaExceededError') {
await executeQuotaErrorCallbacks_js.executeQuotaErrorCallbacks();
}
throw error;
}
}
for (const callback of this.iterateCallbacks('cacheDidUpdate')) {
await callback({
cacheName,
oldResponse,
newResponse: responseToCache.clone(),
request: effectiveRequest,
event: this.event
});
}
return true;
}
/**
* Checks the list of plugins for the `cacheKeyWillBeUsed` callback, and
* executes any of those callbacks found in sequence. The final `Request`
* object returned by the last plugin is treated as the cache key for cache
* reads and/or writes. If no `cacheKeyWillBeUsed` plugin callbacks have
* been registered, the passed request is returned unmodified
*
* @param {Request} request
* @param {string} mode
* @return {Promise<Request>}
*/
async getCacheKey(request, mode) {
const key = `${request.url} | ${mode}`;
if (!this._cacheKeys[key]) {
let effectiveRequest = request;
for (const callback of this.iterateCallbacks('cacheKeyWillBeUsed')) {
effectiveRequest = toRequest(await callback({
mode,
request: effectiveRequest,
event: this.event,
// params has a type any can't change right now.
params: this.params // eslint-disable-line
}));
}
this._cacheKeys[key] = effectiveRequest;
}
return this._cacheKeys[key];
}
/**
* Returns true if the strategy has at least one plugin with the given
* callback.
*
* @param {string} name The name of the callback to check for.
* @return {boolean}
*/
hasCallback(name) {
for (const plugin of this._strategy.plugins) {
if (name in plugin) {
return true;
}
}
return false;
}
/**
* Runs all plugin callbacks matching the given name, in order, passing the
* given param object (merged ith the current plugin state) as the only
* argument.
*
* Note: since this method runs all plugins, it's not suitable for cases
* where the return value of a callback needs to be applied prior to calling
* the next callback. See
* {@link workbox-strategies.StrategyHandler#iterateCallbacks}
* below for how to handle that case.
*
* @param {string} name The name of the callback to run within each plugin.
* @param {Object} param The object to pass as the first (and only) param
* when executing each callback. This object will be merged with the
* current plugin state prior to callback execution.
*/
async runCallbacks(name, param) {
for (const callback of this.iterateCallbacks(name)) {
// TODO(philipwalton): not sure why `any` is needed. It seems like
// this should work with `as WorkboxPluginCallbackParam[C]`.
await callback(param);
}
}
/**
* Accepts a callback and returns an iterable of matching plugin callbacks,
* where each callback is wrapped with the current handler state (i.e. when
* you call each callback, whatever object parameter you pass it will
* be merged with the plugin's current state).
*
* @param {string} name The name fo the callback to run
* @return {Array<Function>}
*/
*iterateCallbacks(name) {
for (const plugin of this._strategy.plugins) {
if (typeof plugin[name] === 'function') {
const state = this._pluginStateMap.get(plugin);
const statefulCallback = param => {
const statefulParam = Object.assign(Object.assign({}, param), {
state
}); // TODO(philipwalton): not sure why `any` is needed. It seems like
// this should work with `as WorkboxPluginCallbackParam[C]`.
return plugin[name](statefulParam);
};
yield statefulCallback;
}
}
}
/**
* Adds a promise to the
* [extend lifetime promises]{@link https://w3c.github.io/ServiceWorker/#extendableevent-extend-lifetime-promises}
* of the event event associated with the request being handled (usually a
* `FetchEvent`).
*
* Note: you can await
* {@link workbox-strategies.StrategyHandler~doneWaiting}
* to know when all added promises have settled.
*
* @param {Promise} promise A promise to add to the extend lifetime promises
* of the event that triggered the request.
*/
waitUntil(promise) {
this._extendLifetimePromises.push(promise);
return promise;
}
/**
* Returns a promise that resolves once all promises passed to
* {@link workbox-strategies.StrategyHandler~waitUntil}
* have settled.
*
* Note: any work done after `doneWaiting()` settles should be manually
* passed to an event's `waitUntil()` method (not this handler's
* `waitUntil()` method), otherwise the service worker thread my be killed
* prior to your work completing.
*/
async doneWaiting() {
let promise;
while (promise = this._extendLifetimePromises.shift()) {
await promise;
}
}
/**
* Stops running the strategy and immediately resolves any pending
* `waitUntil()` promises.
*/
destroy() {
this._handlerDeferred.resolve(null);
}
/**
* This method will call cacheWillUpdate on the available plugins (or use
* status === 200) to determine if the Response is safe and valid to cache.
*
* @param {Request} options.request
* @param {Response} options.response
* @return {Promise<Response|undefined>}
*
* @private
*/
async _ensureResponseSafeToCache(response) {
let responseToCache = response;
let pluginsUsed = false;
for (const callback of this.iterateCallbacks('cacheWillUpdate')) {
responseToCache = (await callback({
request: this.request,
response: responseToCache,
event: this.event
})) || undefined;
pluginsUsed = true;
if (!responseToCache) {
break;
}
}
if (!pluginsUsed) {
if (responseToCache && responseToCache.status !== 200) {
responseToCache = undefined;
}
{
if (responseToCache) {
if (responseToCache.status !== 200) {
if (responseToCache.status === 0) {
logger_js.logger.warn(`The response for '${this.request.url}' ` + `is an opaque response. The caching strategy that you're ` + `using will not cache opaque responses by default.`);
} else {
logger_js.logger.debug(`The response for '${this.request.url}' ` + `returned a status code of '${response.status}' and won't ` + `be cached as a result.`);
}
}
}
}
}
return responseToCache;
}
}
/*
Copyright 2020 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An abstract base class that all other strategy classes must extend from:
*
* @memberof workbox-strategies
*/
class Strategy {
/**
* Creates a new instance of the strategy and sets all documented option
* properties as public instance properties.
*
* Note: if a custom strategy class extends the base Strategy class and does
* not need more than these properties, it does not need to define its own
* constructor.
*
* @param {Object} [options]
* @param {string} [options.cacheName] Cache name to store and retrieve
* requests. Defaults to the cache names provided by
* {@link workbox-core.cacheNames}.
* @param {Array<Object>} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
* to use in conjunction with this caching strategy.
* @param {Object} [options.fetchOptions] Values passed along to the
* [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
* of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
* `fetch()` requests made by this strategy.
* @param {Object} [options.matchOptions] The
* [`CacheQueryOptions`]{@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions}
* for any `cache.match()` or `cache.put()` calls made by this strategy.
*/
constructor(options = {}) {
/**
* Cache name to store and retrieve
* requests. Defaults to the cache names provided by
* {@link workbox-core.cacheNames}.
*
* @type {string}
*/
this.cacheName = cacheNames_js.cacheNames.getRuntimeName(options.cacheName);
/**
* The list
* [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
* used by this strategy.
*
* @type {Array<Object>}
*/
this.plugins = options.plugins || [];
/**
* Values passed along to the
* [`init`]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters}
* of all fetch() requests made by this strategy.
*
* @type {Object}
*/
this.fetchOptions = options.fetchOptions;
/**
* The
* [`CacheQueryOptions`]{@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions}
* for any `cache.match()` or `cache.put()` calls made by this strategy.
*
* @type {Object}
*/
this.matchOptions = options.matchOptions;
}
/**
* Perform a request strategy and returns a `Promise` that will resolve with
* a `Response`, invoking all relevant plugin callbacks.
*
* When a strategy instance is registered with a Workbox
* {@link workbox-routing.Route}, this method is automatically
* called when the route matches.
*
* Alternatively, this method can be used in a standalone `FetchEvent`
* listener by passing it to `event.respondWith()`.
*
* @param {FetchEvent|Object} options A `FetchEvent` or an object with the
* properties listed below.
* @param {Request|string} options.request A request to run this strategy for.
* @param {ExtendableEvent} options.event The event associated with the
* request.
* @param {URL} [options.url]
* @param {*} [options.params]
*/
handle(options) {
const [responseDone] = this.handleAll(options);
return responseDone;
}
/**
* Similar to {@link workbox-strategies.Strategy~handle}, but
* instead of just returning a `Promise` that resolves to a `Response` it
* it will return an tuple of `[response, done]` promises, where the former
* (`response`) is equivalent to what `handle()` returns, and the latter is a
* Promise that will resolve once any promises that were added to
* `event.waitUntil()` as part of performing the strategy have completed.
*
* You can await the `done` promise to ensure any extra work performed by
* the strategy (usually caching responses) completes successfully.
*
* @param {FetchEvent|Object} options A `FetchEvent` or an object with the
* properties listed below.
* @param {Request|string} options.request A request to run this strategy for.
* @param {ExtendableEvent} options.event The event associated with the
* request.
* @param {URL} [options.url]
* @param {*} [options.params]
* @return {Array<Promise>} A tuple of [response, done]
* promises that can be used to determine when the response resolves as
* well as when the handler has completed all its work.
*/
handleAll(options) {
// Allow for flexible options to be passed.
if (options instanceof FetchEvent) {
options = {
event: options,
request: options.request
};
}
const event = options.event;
const request = typeof options.request === 'string' ? new Request(options.request) : options.request;
const params = 'params' in options ? options.params : undefined;
const handler = new StrategyHandler(this, {
event,
request,
params
});
const responseDone = this._getResponse(handler, request, event);
const handlerDone = this._awaitComplete(responseDone, handler, request, event); // Return an array of promises, suitable for use with Promise.all().
return [responseDone, handlerDone];
}
async _getResponse(handler, request, event) {
await handler.runCallbacks('handlerWillStart', {
event,
request
});
let response = undefined;
try {
response = await this._handle(request, handler); // The "official" Strategy subclasses all throw this error automatically,
// but in case a third-party Strategy doesn't, ensure that we have a
// consistent failure when there's no response or an error response.
if (!response || response.type === 'error') {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url
});
}
} catch (error) {
if (error instanceof Error) {
for (const callback of handler.iterateCallbacks('handlerDidError')) {
response = await callback({
error,
event,
request
});
if (response) {
break;
}
}
}
if (!response) {
throw error;
} else {
logger_js.logger.log(`While responding to '${getFriendlyURL_js.getFriendlyURL(request.url)}', ` + `an ${error instanceof Error ? error.toString() : ''} error occurred. Using a fallback response provided by ` + `a handlerDidError plugin.`);
}
}
for (const callback of handler.iterateCallbacks('handlerWillRespond')) {
response = await callback({
event,
request,
response
});
}
return response;
}
async _awaitComplete(responseDone, handler, request, event) {
let response;
let error;
try {
response = await responseDone;
} catch (error) {// Ignore errors, as response errors should be caught via the `response`
// promise above. The `done` promise will only throw for errors in
// promises passed to `handler.waitUntil()`.
}
try {
await handler.runCallbacks('handlerDidRespond', {
event,
request,
response
});
await handler.doneWaiting();
} catch (waitUntilError) {
if (waitUntilError instanceof Error) {
error = waitUntilError;
}
}
await handler.runCallbacks('handlerDidComplete', {
event,
request,
response,
error: error
});
handler.destroy();
if (error) {
throw error;
}
}
}
/**
* Classes extending the `Strategy` based class should implement this method,
* and leverage the {@link workbox-strategies.StrategyHandler}
* arg to perform all fetching and cache logic, which will ensure all relevant
* cache, cache options, fetch options and plugins are used (per the current
* strategy instance).
*
* @name _handle
* @instance
* @abstract
* @function
* @param {Request} request
* @param {workbox-strategies.StrategyHandler} handler
* @return {Promise<Response>}
*
* @memberof workbox-strategies.Strategy
*/
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const messages = {
strategyStart: (strategyName, request) => `Using ${strategyName} to respond to '${getFriendlyURL_js.getFriendlyURL(request.url)}'`,
printFinalResponse: response => {
if (response) {
logger_js.logger.groupCollapsed(`View the final response here.`);
logger_js.logger.log(response || '[No response returned]');
logger_js.logger.groupEnd();
}
}
};
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An implementation of a [cache-first]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-falling-back-to-network}
* request strategy.
*
* A cache first strategy is useful for assets that have been revisioned,
* such as URLs like `/styles/example.a8f5f1.css`, since they
* can be cached for long periods of time.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @extends workbox-strategies.Strategy
* @memberof workbox-strategies
*/
class CacheFirst extends Strategy {
/**
* @private
* @param {Request|string} request A request to run this strategy for.
* @param {workbox-strategies.StrategyHandler} handler The event that
* triggered the request.
* @return {Promise<Response>}
*/
async _handle(request, handler) {
const logs = [];
{
assert_js.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: 'makeRequest',
paramName: 'request'
});
}
let response = await handler.cacheMatch(request);
let error = undefined;
if (!response) {
{
logs.push(`No response found in the '${this.cacheName}' cache. ` + `Will respond with a network request.`);
}
try {
response = await handler.fetchAndCachePut(request);
} catch (err) {
if (err instanceof Error) {
error = err;
}
}
{
if (response) {
logs.push(`Got response from network.`);
} else {
logs.push(`Unable to get a response from the network.`);
}
}
} else {
{
logs.push(`Found a cached response in the '${this.cacheName}' cache.`);
}
}
{
logger_js.logger.groupCollapsed(messages.strategyStart(this.constructor.name, request));
for (const log of logs) {
logger_js.logger.log(log);
}
messages.printFinalResponse(response);
logger_js.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An implementation of a
* [cache-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-only}
* request strategy.
*
* This class is useful if you want to take advantage of any
* [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.
*
* If there is no cache match, this will throw a `WorkboxError` exception.
*
* @extends workbox-strategies.Strategy
* @memberof workbox-strategies
*/
class CacheOnly extends Strategy {
/**
* @private
* @param {Request|string} request A request to run this strategy for.
* @param {workbox-strategies.StrategyHandler} handler The event that
* triggered the request.
* @return {Promise<Response>}
*/
async _handle(request, handler) {
{
assert_js.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: 'makeRequest',
paramName: 'request'
});
}
const response = await handler.cacheMatch(request);
{
logger_js.logger.groupCollapsed(messages.strategyStart(this.constructor.name, request));
if (response) {
logger_js.logger.log(`Found a cached response in the '${this.cacheName}' ` + `cache.`);
messages.printFinalResponse(response);
} else {
logger_js.logger.log(`No response found in the '${this.cacheName}' cache.`);
}
logger_js.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url
});
}
return response;
}
}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const cacheOkAndOpaquePlugin = {
/**
* Returns a valid response (to allow caching) if the status is 200 (OK) or
* 0 (opaque).
*
* @param {Object} options
* @param {Response} options.response
* @return {Response|null}
*
* @private
*/
cacheWillUpdate: async ({
response
}) => {
if (response.status === 200 || response.status === 0) {
return response;
}
return null;
}
};
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An implementation of a
* [network first]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-falling-back-to-cache}
* request strategy.
*
* By default, this strategy will cache responses with a 200 status code as
* well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.
* Opaque responses are are cross-origin requests where the response doesn't
* support [CORS]{@link https://enable-cors.org/}.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @extends workbox-strategies.Strategy
* @memberof workbox-strategies
*/
class NetworkFirst extends Strategy {
/**
* @param {Object} [options]
* @param {string} [options.cacheName] Cache name to store and retrieve
* requests. Defaults to cache names provided by
* {@link workbox-core.cacheNames}.
* @param {Array<Object>} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
* to use in conjunction with this caching strategy.
* @param {Object} [options.fetchOptions] Values passed along to the
* [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
* of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
* `fetch()` requests made by this strategy.
* @param {Object} [options.matchOptions] [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
* @param {number} [options.networkTimeoutSeconds] If set, any network requests
* that fail to respond within the timeout will fallback to the cache.
*
* This option can be used to combat
* "[lie-fi]{@link https://developers.google.com/web/fundamentals/performance/poor-connectivity/#lie-fi}"
* scenarios.
*/
constructor(options = {}) {
super(options); // If this instance contains no plugins with a 'cacheWillUpdate' callback,
// prepend the `cacheOkAndOpaquePlugin` plugin to the plugins list.
if (!this.plugins.some(p => 'cacheWillUpdate' in p)) {
this.plugins.unshift(cacheOkAndOpaquePlugin);
}
this._networkTimeoutSeconds = options.networkTimeoutSeconds || 0;
{
if (this._networkTimeoutSeconds) {
assert_js.assert.isType(this._networkTimeoutSeconds, 'number', {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: 'constructor',
paramName: 'networkTimeoutSeconds'
});
}
}
}
/**
* @private
* @param {Request|string} request A request to run this strategy for.
* @param {workbox-strategies.StrategyHandler} handler The event that
* triggered the request.
* @return {Promise<Response>}
*/
async _handle(request, handler) {
const logs = [];
{
assert_js.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: 'handle',
paramName: 'makeRequest'
});
}
const promises = [];
let timeoutId;
if (this._networkTimeoutSeconds) {
const {
id,
promise
} = this._getTimeoutPromise({
request,
logs,
handler
});
timeoutId = id;
promises.push(promise);
}
const networkPromise = this._getNetworkPromise({
timeoutId,
request,
logs,
handler
});
promises.push(networkPromise);
const response = await handler.waitUntil((async () => {
// Promise.race() will resolve as soon as the first promise resolves.
return (await handler.waitUntil(Promise.race(promises))) || ( // If Promise.race() resolved with null, it might be due to a network
// timeout + a cache miss. If that were to happen, we'd rather wait until
// the networkPromise resolves instead of returning null.
// Note that it's fine to await an already-resolved promise, so we don't
// have to check to see if it's still "in flight".
await networkPromise);
})());
{
logger_js.logger.groupCollapsed(messages.strategyStart(this.constructor.name, request));
for (const log of logs) {
logger_js.logger.log(log);
}
messages.printFinalResponse(response);
logger_js.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url
});
}
return response;
}
/**
* @param {Object} options
* @param {Request} options.request
* @param {Array} options.logs A reference to the logs array
* @param {Event} options.event
* @return {Promise<Response>}
*
* @private
*/
_getTimeoutPromise({
request,
logs,
handler
}) {
let timeoutId;
const timeoutPromise = new Promise(resolve => {
const onNetworkTimeout = async () => {
{
logs.push(`Timing out the network response at ` + `${this._networkTimeoutSeconds} seconds.`);
}
resolve(await handler.cacheMatch(request));
};
timeoutId = setTimeout(onNetworkTimeout, this._networkTimeoutSeconds * 1000);
});
return {
promise: timeoutPromise,
id: timeoutId
};
}
/**
* @param {Object} options
* @param {number|undefined} options.timeoutId
* @param {Request} options.request
* @param {Array} options.logs A reference to the logs Array.
* @param {Event} options.event
* @return {Promise<Response>}
*
* @private
*/
async _getNetworkPromise({
timeoutId,
request,
logs,
handler
}) {
let error;
let response;
try {
response = await handler.fetchAndCachePut(request);
} catch (fetchError) {
if (fetchError instanceof Error) {
error = fetchError;
}
}
if (timeoutId) {
clearTimeout(timeoutId);
}
{
if (response) {
logs.push(`Got response from network.`);
} else {
logs.push(`Unable to get a response from the network. Will respond ` + `with a cached response.`);
}
}
if (error || !response) {
response = await handler.cacheMatch(request);
{
if (response) {
logs.push(`Found a cached response in the '${this.cacheName}'` + ` cache.`);
} else {
logs.push(`No response found in the '${this.cacheName}' cache.`);
}
}
}
return response;
}
}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An implementation of a
* [network-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-only}
* request strategy.
*
* This class is useful if you want to take advantage of any
* [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.
*
* If the network request fails, this will throw a `WorkboxError` exception.
*
* @extends workbox-strategies.Strategy
* @memberof workbox-strategies
*/
class NetworkOnly extends Strategy {
/**
* @param {Object} [options]
* @param {Array<Object>} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
* to use in conjunction with this caching strategy.
* @param {Object} [options.fetchOptions] Values passed along to the
* [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
* of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
* `fetch()` requests made by this strategy.
* @param {number} [options.networkTimeoutSeconds] If set, any network requests
* that fail to respond within the timeout will result in a network error.
*/
constructor(options = {}) {
super(options);
this._networkTimeoutSeconds = options.networkTimeoutSeconds || 0;
}
/**
* @private
* @param {Request|string} request A request to run this strategy for.
* @param {workbox-strategies.StrategyHandler} handler The event that
* triggered the request.
* @return {Promise<Response>}
*/
async _handle(request, handler) {
{
assert_js.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: '_handle',
paramName: 'request'
});
}
let error = undefined;
let response;
try {
const promises = [handler.fetch(request)];
if (this._networkTimeoutSeconds) {
const timeoutPromise = timeout_js.timeout(this._networkTimeoutSeconds * 1000);
promises.push(timeoutPromise);
}
response = await Promise.race(promises);
if (!response) {
throw new Error(`Timed out the network response after ` + `${this._networkTimeoutSeconds} seconds.`);
}
} catch (err) {
if (err instanceof Error) {
error = err;
}
}
{
logger_js.logger.groupCollapsed(messages.strategyStart(this.constructor.name, request));
if (response) {
logger_js.logger.log(`Got response from network.`);
} else {
logger_js.logger.log(`Unable to get a response from the network.`);
}
messages.printFinalResponse(response);
logger_js.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
/**
* An implementation of a
* [stale-while-revalidate]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#stale-while-revalidate}
* request strategy.
*
* Resources are requested from both the cache and the network in parallel.
* The strategy will respond with the cached version if available, otherwise
* wait for the network response. The cache is updated with the network response
* with each successful request.
*
* By default, this strategy will cache responses with a 200 status code as
* well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.
* Opaque responses are cross-origin requests where the response doesn't
* support [CORS]{@link https://enable-cors.org/}.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @extends workbox-strategies.Strategy
* @memberof workbox-strategies
*/
class StaleWhileRevalidate extends Strategy {
/**
* @param {Object} [options]
* @param {string} [options.cacheName] Cache name to store and retrieve
* requests. Defaults to cache names provided by
* {@link workbox-core.cacheNames}.
* @param {Array<Object>} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
* to use in conjunction with this caching strategy.
* @param {Object} [options.fetchOptions] Values passed along to the
* [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
* of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
* `fetch()` requests made by this strategy.
* @param {Object} [options.matchOptions] [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
*/
constructor(options = {}) {
super(options); // If this instance contains no plugins with a 'cacheWillUpdate' callback,
// prepend the `cacheOkAndOpaquePlugin` plugin to the plugins list.
if (!this.plugins.some(p => 'cacheWillUpdate' in p)) {
this.plugins.unshift(cacheOkAndOpaquePlugin);
}
}
/**
* @private
* @param {Request|string} request A request to run this strategy for.
* @param {workbox-strategies.StrategyHandler} handler The event that
* triggered the request.
* @return {Promise<Response>}
*/
async _handle(request, handler) {
const logs = [];
{
assert_js.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: this.constructor.name,
funcName: 'handle',
paramName: 'request'
});
}
const fetchAndCachePromise = handler.fetchAndCachePut(request).catch(() => {// Swallow this error because a 'no-response' error will be thrown in
// main handler return flow. This will be in the `waitUntil()` flow.
});
void handler.waitUntil(fetchAndCachePromise);
let response = await handler.cacheMatch(request);
let error;
if (response) {
{
logs.push(`Found a cached response in the '${this.cacheName}'` + ` cache. Will update with the network response in the background.`);
}
} else {
{
logs.push(`No response found in the '${this.cacheName}' cache. ` + `Will wait for the network response.`);
}
try {
// NOTE(philipwalton): Really annoying that we have to type cast here.
// https://github.com/microsoft/TypeScript/issues/20006
response = await fetchAndCachePromise;
} catch (err) {
if (err instanceof Error) {
error = err;
}
}
}
{
logger_js.logger.groupCollapsed(messages.strategyStart(this.constructor.name, request));
for (const log of logs) {
logger_js.logger.log(log);
}
messages.printFinalResponse(response);
logger_js.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_js.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
}
exports.CacheFirst = CacheFirst;
exports.CacheOnly = CacheOnly;
exports.NetworkFirst = NetworkFirst;
exports.NetworkOnly = NetworkOnly;
exports.StaleWhileRevalidate = StaleWhileRevalidate;
exports.Strategy = Strategy;
exports.StrategyHandler = StrategyHandler;
return exports;
}({}, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private));
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